A phrase making reference to the BD-5 experimental homebuilt aircraft, an example of which was used by James Bond in the initial action sequence of the movie "Octopussy" which starred Sir Roger Moore in 1983.

Small devices which were invented around WWII era. They were built to look like pens, but are actually small missles that propel themselves through the air, hopefully landing in the eye of an opposing human.

doing or having a pocket rocket is masterbating or "wanking/jacking off" inside ones own pocket, simply accomplished by reaching into the pocket of ones trousers, also known as a stealth wank. can be performend in public if user has masterd the techniqe.
this is an easy was to pleasure ones self while staying annonymus.

guy 1: dude why are you pulling a face
guy 2:we have lift off
guy 1:awww no way...POCKET ROCKET

Henri Richard, a former former professional ice hockey player who played centre with the Montreal Canadiens from 1955 to 1975. Although 15 years his junior, he was the brother of hockey legend Maurice 'The Rocket' Richard and consequently because he was smaller (5'7" and 160 lbs.), he was given the nickname 'The Pocket Rocket'.